Question

Ayuda para resolver:
a) m.(m+m)-5m²
b) 10t⁴:2t²+t.(-t)
c) -2d²-4+2.(d-2)²+5
d) a+2b-4a-6b+3a.(a-3)

Answer 1

a) m.(m+m)-5m²
m(2m)-5m²
2m²-5m²
-3m²
b) 10t⁴:2t²+t.(-t)
5t²-t²
c) -2d²-4+2.(d-2)²+5
-2d²-4+2(d²+2(-2)d+(-2)²)+5
-2d²-4+2d²-8d+4+5
-8d+5
d) a+2b-4a-6b+3a.(a-3)
-3a-4b+3a²-9a
3a²-12a-4b